Crescent Neptune and Triton
Gliding silently through the outerSolar System, theVoyager 2 spacecraft camera capturedNeptune andTriton together in crescent phase. The elegant picture of thegas giant planet and itscloudy moon was taken from behind just afterclosest approach in 1989. It could not have been taken fromEarth becauseNeptune never shows a crescent phase to sunward Earth.
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